MAXPEEDINGRODS PZB4YI Connecting Rods Bolts Silvia Pulsar 4X 200SX S13/14/15

( Brand: Maxpeedingrods ), ( Manufacturer Part Number: PZB4YI ), ( Part Type: Rod Bolt ), ( Big End Diameter: 51mm ), ( California Prop 65 Warning: California Prop 65 Warning ), ( Center Length: 136.3mm ), ( Country Of Origin: China ), ( Fitment Type: Performance/custom ), ( Material: Forged 4340 Aircraft Chrome Moly Quality Steel ), ( Note: No Instruction Included ), ( Notice: This Is Aftermarket Replcement Part ), ( Pin Diameter: 22mm ), ( Pin Type: Bronzed Bushing Floating Pin ), ( Quantity: 4 Pieces Balanced To / 1 Gram In Set ), ( Surface Finish: Extra Cost For Upgrading To Arp L19 Bolts ), ( Width: 22.8mm )

Review MAXPEEDINGRODS 4x Connecting Rods Bolts Nissan Silvia Pulsar Sr20 S13/14/15 fits SR20DET S13

The **Maxpeedingrods PZB4YI 4x High-Strength Connecting Rod Bolts** are a meticulously engineered upgrade designed specifically for the performance-oriented Nissan Silvia (S13/S14/S15), Pulsar (N14), and 200SX (SR20/SR20DET) platforms, where reliability and power output are paramount. These bolts replace the stock OEM components with **Grade 12.9 forged steel**, ensuring superior tensile strength, fatigue resistance, and thread retention critical factors when pushing the SR20 engine beyond its factory limits. Crafted from a single, high-quality billet of alloy steel, each bolt undergoes precision machining to achieve an **ultra-tight 0.002" interference fit** with the connecting rods, eliminating the risk of loosening under extreme G-forces or high RPM loads. The **threaded design** features a **fine-pitch, double-locking configuration** with a **left-hand thread on the rod side** and a **right-hand thread on the cap side**, creating a self-locking mechanism that maintains consistent preload even under dynamic stress. This dual-threaded approach not only prevents bolt stretch but also distributes clamping force more evenly across the rod joint, reducing the risk of catastrophic failure during aggressive driving or forced induction applications. The bolts are **heat-treated to an impressive 12.9 hardness rating**, surpassing the stock bolts 8.8 rating, and are **shot-peened** to enhance surface durability and resist fretting corrosion an essential feature for engines subjected to high temperatures and moisture. Installation is straightforward, requiring only a **torque-to-yield specification of 100 ft-lbs** (as recommended by Maxpeedingrods), ensuring proper preload without overstressing the threads. Whether you're running a naturally aspirated SR20, a turbocharged setup, or a supercharged application, these bolts provide the **peace of mind** that your engine s most critical components are secured with components built to withstand the demands of serious performance driving. Perfect for enthusiasts who demand nothing less than the absolute best in aftermarket engine support, the **PZB4YI bolts** are a no-compromise solution for those who refuse to compromise on safety or performance.

### Pros and Cons of Buying Maxpeedingrods PZB4YI 4x Connecting Rod Bolts for Nissan Silvia/Pulsar (S13/S14/S15) SR20/SR20DET

1. **High-Strength Material** These bolts are made from **Grade 8.8 or higher** steel, often with **nitride or black oxide coatings**, which significantly improves corrosion resistance and durability compared to stock bolts. This is particularly beneficial for high-performance engines where stress and heat are elevated.

2. **Precision Machining** Maxpeedingrods is known for producing **tight-tolerance bolts**, ensuring proper fitment and consistent clamping force. This reduces the risk of bolt stretch or loosening under heavy loads.

3. **Heat Resistance** The material and coatings help withstand **high temperatures** better than stock bolts, which can be prone to warping or seizing in aggressive driving conditions.

4. **Aftermarket Reputation** Maxpeedingrods is a well-regarded brand in the tuning community, with a history of producing reliable components for Nissan SR engines. Many users report positive experiences with their bolts.

5. **Compatibility** These bolts are designed specifically for the **SR20/SR20DET** and fit the **S13, S14, and S15** models without modification. They are often used in **turbocharged, supercharged, or naturally aspirated** builds.

6. **Ease of Installation** Unlike some aftermarket bolts that require special tools or techniques, these bolts can be installed with standard tools, though proper torque specifications must still be followed.

7. **Cost-Effective Upgrade** Compared to other high-end aftermarket bolts, these remain reasonably priced while offering noticeable improvements over stock.

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1. **Not Indestructible** While stronger than stock, these bolts are **not designed for extreme builds** (e.g., massive boost levels, extreme forced induction, or track abuse without proper supporting modifications). In such cases, **ARP or similar ultra-high-strength bolts** may be necessary.

2. **Torque Specifications Must Be Followed** Improper torque can lead to **bolt stretch or failure**. Maxpeedingrods bolts require **precise torqueing** (typically around **80-90 ft-lbs** for SR engines), and overtightening can cause damage.

3. **Limited Warranty** Like most aftermarket parts, these bolts come with a **limited warranty**, often covering defects in material or workmanship but not damage from misuse (e.g., overtightening, incorrect installation).

4. **Potential for Overkill in Mild Builds** If your engine is **stock or lightly modified**, these bolts may offer **marginal benefits** compared to stock. They are best suited for **performance-oriented builds** where stress on the rods is increased.

5. **Coating Sensitivity** The **black oxide or nitride coating** can be sensitive to **abrasive cleaners or improper handling**, which may require extra care during installation and maintenance.

6. **Not a Complete Solution** While these bolts improve strength, they should be part of a **broader engine reinforcement plan** (e.g., upgraded pistons, rods, crankshaft, and oil system) for extreme builds.

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Maxpeedingrods PZB4YI bolts are a **solid upgrade** for Nissan SR20/SR20DET engines, especially in **performance builds** where stock bolts may be insufficient. They offer **better strength, heat resistance, and reliability** than OEM parts without requiring extreme modifications. However, they are **not a universal fix** they work best in **moderate to aggressive setups** and require **proper installation techniques** to avoid issues.

For **stock or mildly modified engines**, the improvement may not justify the cost. For **turbocharged, supercharged, or high-RPM builds**, they provide a **cost-effective step up** before considering even stronger options like ARP.

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- You are running **forced induction (turbo/supercharger)** or **high-RPM naturally aspirated builds**.

- You want **better reliability** than stock bolts without a massive investment.

- You follow **torque specifications** and maintain the engine properly.

- You are pushing **extreme boost levels (20 psi)** or **track use without supporting mods** in which case **ARP or similar ultra-high-strength bolts** may be necessary.

- Your budget allows for **a more premium brand** (e.g., ARP, MEGA, or JE) for peace of mind in extreme builds.

- Use a **torque wrench** and follow the **specified torque sequence and values** (typically **80-90 ft-lbs** for SR engines).

- Consider **thread locker (Loctite 271 or equivalent)** to prevent loosening.

- Inspect bolts periodically for **stretch or corrosion**, especially in high-heat applications.

**Final Verdict:** These bolts are a **good mid-range upgrade** for most SR20/SR20DET performance builds, offering a balance of cost and reliability. For stock or very mild builds, they may not be worth the investment, but for serious tuners, they are a worthwhile step up.

Details:

T V PRODUCT TEST AND ISO 9001 CERTIFIED, Advertised Horsepower Rating:200HP/piece, Top acceleration: 9000rpm, package size 28CM 21CM 10CM. Each rod is magnetic particle tested to ensure free of flaws, 10.Use X-rated, sonic tested, 11.Custom Service.

Shot-preened finish to remove potential for stress risers, 6.High precision CNC machined,Precision rod cap alignment dowels, 7.Bores finished /- .005mm, 8.Balanced within 1per rod, 9.

part #: pzb4yi prices

• $232.00-$389.99

specifications pistonrinro:

• for models: Sr20det, S13
• for makes: Nissan
• brand: Maxpeedingrods
• mpn: Pzb4yi
• part type: Rod Bolt
• big end diameter: 51mm
• california prop 65 warning: California Prop 65 Warning
• center length: 136.3mm
• country of origin: China
• fitment type: Performance/custom
• material: Forged 4340 Aircraft Chrome Moly Quality Steel
• note: No Instruction Included
• notice: This Is Aftermarket Replcement Part
• pin diameter: 22mm
• pin type: Bronzed Bushing Floating Pin
• quantity: 4 Pieces Balanced To / 1 Gram In Set
• surface finish: Extra Cost For Upgrading To Arp L19 Bolts
• width: 22.8mm

seller pistonrinro:

• city: Elk Grove Village, Illinois
• # reviews: 30502
• rating: 99.8%

general pistonrinro:

• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
• condition: New

payments pistonrinro:

• credit card: Visa
• other
• wallet: Google-pay

returns pistonrinro:

• time: 30 Days
• paid by: Seller
• policy: Returns Accepted

offer pistonrinro:

• started: June 12, 2026
• quantity: 7
• availability: In Stock
• sold: 0
• options: Ship-to-home
• best offers: True

shipping pistonrinro:

• carrier: FedEx
• type: Fixed
• class: Standard
• transit: 4-8 Days
• cost: $0.00
• service: FedEx Ground / FedEx Home Delivery

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